Revert back to previous settings where "tags" field used for remote webhook url.

Few days ago `tags` field in WordPress is used for remote web-hook url where `body` is preserved for sending a more data to web-hook. I don't understand what is the reason for changing this.

Now that `tag` field is ignored & `body` is being used for providing remote url there is one less field to send data with.

I would prefer this as a #payload:

```
{
user: "username specified in ifttt",
password: "password specified in ifttt",
title: "title generated for the recipe in ifttt",
categories:['array','of','categories','passed'],
description:"Body of the blog post as created in ifttt recipe"
}
```

Now all my web-hooks recopies are broken. Plz fix it.

No file or test is named. Start by tracing where the webhook reads the WordPress tags and body fields, then compare the current payload with the requested payload. Done means tags supplies the remote webhook URL, body remains available as post content, and existing webhook recipes receive the expected fields.

Written by the indexing model from the issue text.